Ap 170 Cab Sounds

So, out of nowhere, the cab sounds of the AP 170 I have installed have disappeared. It now just plays exterior sounds in the cab instead.
I did update it from the AP website recently, which could have caused a problem, however I have looked in my files and all sound files are unchanged from when I first installed it.

Is anyone else having this issue? Can't find a fix for it!

 

Just try to reinstall the pack to start off with.

 

Have just done that and am still having the same problem annoyingly.